title: Ring- and N-Hydroxylation of 2-acetylaminofluorene by reconstituted mouse liver microsomal cytochrome P-450 enzyme system.
abstract: The N- and ring-hydroxylation of 2-acetylaminofluorene (AAF) are examined with a reconstituted cytochrome P-450 enzyme system from liver microsomal fractions from both control and 3-methylcholanthrene (MC)-pretreated mice. Partial purification of cytochrome P-450 fraction is achieved by bacterial protease treatment of microsomes followed by Triton X-100 solubilization and ammonium sulfate precipitation. Both cytochrome P-450 and NADPH-cytochrome c reductase fractions are required for optimum oxidative activity. Hydroxylation activity is determined by the source of cytochrome P-450 fraction; cytochrome P-450 fraction from MC-pretreated mice is several fold more active than that from controls.
mesh_terms: D015073:2-Acetylaminofluorene / Q000378:metabolism*; D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism*; D006900:Hydroxylation; D008297:Male; D008748:Methylcholanthrene / Q000494:pharmacology; D051379:Mice; D008862:Microsomes, Liver / Q000201:enzymology*; D009251:NADPH-Ferrihemoprotein Reductase / Q000378:metabolism; D010088:Oxidoreductases / Q000378:metabolism; D013045:Species Specificity
chemical_list: D008748:Methylcholanthrene; D003577:Cytochrome P-450 Enzyme System; D015073:2-Acetylaminofluorene; D010088:Oxidoreductases; D009251:NADPH-Ferrihemoprotein Reductase